Search found 5 matches

by the poi
Thu Nov 04, 2004 7:21 pm
Forum: General Discussion
Topic: A "volt" meter
Replies: 1
Views: 436

A "volt" meter

I'm planning on building a display with a basic 3-digit LCD display, like this one: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=285058&Row=137357&Site=US . It needs to take a 0-5v signal, double the voltage, add 9, and then display this with one decimal place. It would seem that I j...
by the poi
Fri Jun 11, 2004 2:01 pm
Forum: General Discussion
Topic: Circuit help: 5-0v scaled the 0-1v
Replies: 7
Views: 1199

Re: Circuit help: 5-0v scaled the 0-1v

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Russ Kincaid: I posted a schematic on my website. You may have to copy and past the URL because Geocities does not allow links. http://www.geocities.com/russlk/vcnv.jpg <p>I forgot the divider resi...
by the poi
Thu Jun 10, 2004 12:21 pm
Forum: General Discussion
Topic: Circuit help: 5-0v scaled the 0-1v
Replies: 7
Views: 1199

Re: Circuit help: 5-0v scaled the 0-1v

Damn, I'm afraid this is all over my head... any possibility someone could draw up a rough circuit diagram, or maybe give some more specifics what I would need to wire up? In any event, thanks for your help so far David
by the poi
Tue Jun 08, 2004 8:56 am
Forum: General Discussion
Topic: Circuit help: 5-0v scaled the 0-1v
Replies: 7
Views: 1199

Re: Circuit help: 5-0v scaled the 0-1v

Thanks for the fast reply! Any suggestions on a part number of op-amp to use (I'm afraid I'm lost outside of resistors and voltage :) ) Also, could you elaborate on the diodes in the voltage divider? Since this design calls for a regulated supply voltage, how could I go about stabilizng the 12v car ...
by the poi
Mon Jun 07, 2004 9:31 pm
Forum: General Discussion
Topic: Circuit help: 5-0v scaled the 0-1v
Replies: 7
Views: 1199

Circuit help: 5-0v scaled the 0-1v

I have a sensor (a wideband o2 sensor, for those intersted) that outputs a voltage from 5-0v. I however am trying to figure out a way to scale that voltage linearly to a 0-1v output. Im afraid I haven't had much of a background in electronics however, so I'm more or less lost from the onset. Anyone ...